Mairia Cahill says her election to the Seanad isn't a done deal.

The Labour party's nominated Ms Cahill to contest the Seanad bye election for the seat vacated by Jimmy Harte - who has suffered serious health issues.

Ms Cahill says she is happy to accept the nomination from Tánaiste Joan Burton and Minister for the Environment Alan Kelly - the by election's due to take place next month.

As it is a Labour vacancy Fine Gael's expected to support her nomination.

Mairia who waived her anonymity to campaign against sexual abuse says the party's stance on the 8th amendment and the marriage referendum are among the reasons she's decided to join Labour: